The GwtExt support in UFace lets you deploy your UFace application using GWT with the gwt-ext widget library which uses the excellent ExtJS library.

UIComposite

To be able to create widgets with UFace you need to get a UIComposite to represent the Panel you are gonna add widgets to. You can see this in action in the org.ufacekit.ui.gwtext.example.

You can create a UIComposite as follows in your EntryPoint

public class MyApp implements EntryPoint {

    public void onModuleLoad() {
        RootPanel rootPanel = RootPanel.get();
        UIComposite root = new GwtExtComposite(rootPanel);

        // now I can create some UI components
        UIFactory factory = root.getFactory();
        factory.createTable(root, ...);
    }
}